Lika SFA-10000-FD, Руководство пользователя

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SFA-5000 • SFA-10000 DeviceNet
Encoder  Master (2 nd message received)
CAN-ID 3 Data byte
403+(ID<<3)
Ms SC Err
80 C1 00
Encoder  Master (parameter value accepted)
CAN-ID 3 Data byte
403+(ID<<3)
Ms SC Err
00 90 00
EXAMPLE
Let's take a look at the following example to better understand the preset
function and the meaning and use of the related attributes:
23-01-13 Preset
value and 23-01-33 Offset .
The encoder position which is transmitted results from the following
calculation:
Transmitted value
=
read position
(it does not matter whether the position is
physical or scaled) + 23-01-13 Preset value - 23-01-33 Offset .
If you never set the
23-01-13 Preset value
and you never performed the
preset setting, then the transmitted value and the read position are necessarily
the same as
23-01-13 Preset value
= 0 and
23-01-33 Offset
= 0.
When you set the 23-01-13 Preset value and then execute the preset setting,
the system saves the current encoder position in the
23-01-33 Offset
attribute. It follows that the transmitted value and the 23-01-13 Preset value
are the same as
read position
-
23-01-33 Offset
= 0; in other words, the
value set next to the 23-01-13 Preset value attribute is paired with the
current position of the encoder as you wish.
For example, let's assume that the value “50” is set next to the
23-01-13
Preset value attribute and you execute the preset setting when the encoder
position is “1000”. In other words, you want to receive the value “50” when the
encoder reaches the position “1000”.
We will obtain the following information sequence:
Transmitted value
=
read position
(=”1000”) +
23-01-13 Preset value
(=”50”) - 23-01-33 Offset (=”1000”) = 50.
The following transmitted value will be:
Transmitted value = read position (=”1001”) + 23-01-13 Preset value
(=”50”) -
23-01-33 Offset
(=”1000”) = 51.
And so on.
MAN SFA_5000_10000_FD E 1.0.odt DeviceNet interface 74 of 88